A hand-held machine tool is provided. From the received parameter values, a number of parasitic values for various components in the multi-component circuit are determined. A gas is contained in the enclosure to provide thermal coupling to the LED array. A method of formulating a composition for improving metabolic function includes packaging together the first formulation and packaging together and separately from the first formulation the second formulation. The control cylinders are mounted on the base to close the canal set and can selectively open or close holes of the canal set.